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Scan Tool Reference Control Module References for scan tool information Circuit/System Verification Block the drive wheels. Carefully supply sufficient light to simulate daylight conditions to the Circuit/System Testing 1. Ignition OFF, disconnect the harness connector X4 at the BCM. 2. Ignition ON, verify the daytime running lamps are not on. If the daytime running lamps are on, test the DRL relay control circuit for a short to 3. Install a 10A fused jumper wire between the relay control circuit terminal 23 and ground. Verify the daytime running lamps are on. are on. If the daytime running lamps are not on, test the DRL relay control circuit for a short 4. If all circuits test normal, replace the BCM. Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Underhood Electrical Center or Junction Block Replacement Control Module References for BCM replacement, setup, and programming DTC B2610 Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach. Diagnostic Procedure Instructions provides an overview of each diagnostic category. DTC Descriptors DTC B2610 00
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Lighting - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Passenger Compartment Dimming 1 Circuit DTC B2610 01 Passenger Compartment Dimming 1 Circuit Short to Battery DTC B2610 02 Passenger Compartment Dimming 1 Circuit Short to Ground DTC B2610 04 Passenger Compartment Dimming 1 Circuit Open Diagnostic Fault Information Circuit/System Description When the instrument panel lamps dimmer switch is activated, a variable voltage signal is applied Conditions for Running the DTC The ignition is ON. Conditions for Setting the DTC The BCM, driver door lock and side window switch, or passenger door lock and side window Action Taken When the DTC Sets Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance LED Dimming Supply B2610 00 or B2610 02 B2610 00 or B2610 04 B2610 00 or B2610 01 - LED Backlighting Ground - 1 - - 1. Interior Backlighting Inoperative
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Lighting - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
The BCM, driver door switch, and passenger door switch will cease attempts to dim or illuminate Conditions for Clearing the DTC The conditions for setting the DTC are no longer present. A history DTC clears after 100 malfunction-free ignition cycles. Reference Information Schematic Reference Interior Lights Dimming Schematics Connector End View Reference Component Connector End Views Description and Operation Interior Lighting Systems Description and Operation Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References for scan tool information Circuit/System Verification Ignition and park lamps ON, vary the interior lamp dimming switch from dim to full bright. The Circuit/System Testing 1. Ignition OFF, disconnect the harness connector at the affected component.
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Lighting - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
2. Ignition OFF, verify that a test lamp illuminates between the listed ground circuit terminal and B+. Left steering wheel switch terminal 8 Right steering wheel switch terminal 1 PTO switch terminal 5 Trailer brake controller switch terminal 8 DIC switch terminal 5 HVAC control module terminal 10 X2 IP multifunction switch terminal 3 If the test lamp does not illuminate, test the ground circuit for an open/high resistance. 3. Connect a test lamp between the listed LED dimming control circuit terminal and ground. Left steering wheel switch terminal 6 Right steering wheel switch terminal 2 PTO switch terminal 6 Trailer brake controller switch terminal 7 DIC switch terminal 4 HVAC control module terminal 1 X2 IP multifunction switch terminal 4 4. Command the dimming test high to low with a scan tool. The test lamp should turn from bright to dim when changing between the commanded states. If the test lamp is always off, test the control circuit for an open/high resistance or If the test lamp is always bright, test the control circuit for a short to voltage. If the 5. If all circuits test normal, test or replace the affected component. Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Refer to the appropriate replacement procedure for the component causing the condition. Control Module References for BCM, driver door lock and side window switch, or DTC B2615
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Lighting - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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